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Check valve push-in fittings combine the convenience of quick-connect push-in fittings with a built-in check valve mechanism. Designed for use in progressive lubrication distributors, these fittings ensure unidirectional fluid flow, preventing backflow that could disrupt lubrication cycles or damage sensitive components. Ideal for hydraulic, pneumatic, and automated lubrication systems, they are critical for maintaining precision in applications requiring consistent, contamination-free lubricant delivery.
These fittings integrate two core technologies:
Push-to-Connect Design: Tool-free installation by inserting tubing into the fitting until it locks securely.
Check Valve Mechanism: A spring-loaded ball or poppet inside the fitting opens under system pressure to allow forward flow and closes to block reverse flow.
This dual functionality ensures reliable performance in progressive distributors, which meter lubricant to multiple points sequentially. The check valve prevents lubricant from flowing backward, maintaining system pressure and distribution accuracy.
Prevent Backflow: Safeguard against pressure loss and lubrication cycle disruptions.
Ensure System Integrity: Protect pumps and valves from damage caused by reverse fluid movement.
Fast Installation: Reduce downtime with tool-free assembly—no threading or clamps required.
Leak Resistance: Integrated O-rings and collets maintain seals under high vibration and pressure (up to 150–250 PSI).
Material Versatility: Available in brass, stainless steel, or thermoplastics for compatibility with oils, greases, and aggressive fluids.
Progressive distributors are widely used in centralized lubrication systems to deliver precise amounts of lubricant to multiple points. Check valve push-in fittings enhance their performance in:
Automotive Manufacturing: Ensuring consistent lubrication for robotic arms, assembly lines, and CNC machines.
Heavy Machinery: Protecting excavators, mining rigs, and agricultural equipment from dry-running bearings.
Food & Beverage: Hygienic designs for NSF-certified systems requiring contamination-free lubrication.
Packaging Machinery: Preventing grease backflow in high-speed bottling or sealing equipment.
Feature | Check Valve Push-In Fittings | Standard Push-In Fittings |
---|---|---|
Backflow Prevention | Yes (built-in valve) | No |
Pressure Retention | High (maintains system pressure) | Dependent on external valves |
Ideal Use Case | Progressive systems, bidirectional risks | Simple unidirectional systems |
Cost | Slightly higher (added valve mechanism) | Lower |
Flow Direction: Confirm the valve is oriented correctly for your system’s flow requirements.
Cracking Pressure: Ensure the valve’s opening pressure (e.g., 3–5 PSI) aligns with your system’s minimum operating pressure.
Fluid Compatibility: Match materials (e.g., stainless steel for corrosive fluids) to your lubricant type.
Tubing Size: Verify compatibility with your distributor’s tubing dimensions (e.g., 1/8” or 6mm).
Temperature Range: Select fittings rated for operational extremes (-20°C to 80 °C).
Clean Tubing Ends: Debris-free cuts prevent valve clogging or seal damage.
Test Flow Direction: Confirm the check valve opens in the intended flow direction.
Avoid Over-Pressurization: Stay within the fitting’s PSI rating to prevent valve failure.
Regular Inspections: Check for wear on O-rings or valve components during system maintenance.
Retrofit Gradually: Replace standard fittings in critical zones first to minimize downtime.
Q: Can these fittings handle viscous lubricants like grease?
A: Yes, but select models with larger flow paths and higher cracking pressures to avoid clogging.
Q: Are they reusable?
A: Absolutely—disconnect by pressing the release collar and reuse after inspection.
Q: Do check valves affect flow rates?
A: Minimally, but ensure the valve’s design (e.g., ball vs. poppet) suits your viscosity requirements.
Q: How do I troubleshoot a stuck valve?
A: Flush the system to remove debris or replace the fitting if the spring or seal is damaged.
Part No. | Tube | Thread | Item No. |
RVP04M10 | 4 | M10X1 | AHPV04-M10x1 |
RVP06M10 | 6 | M10X1 | AHPV06-M10x1 |
RVP08M10 | 8 | M10X1 | AHPV08-M10x1 |
RVP10M10 | 10 | M10X1 | AHPV10-M10x1 |
RVP1/8M10 | 1/8 | M10X1 | AHPV1/8-M10x1 |
RVP5/32M10 | 5/32 | M10X1 | AHPV5/32-M10x1 |
RVP1/4M10 | 1/4 | M10X1 | AHPV1/4-M10x1 |
RVP3/8M10 | 3/8 | M10X1 | AHPV3/8-M10x1 |
Check valve push-in fittings combine the convenience of quick-connect push-in fittings with a built-in check valve mechanism. Designed for use in progressive lubrication distributors, these fittings ensure unidirectional fluid flow, preventing backflow that could disrupt lubrication cycles or damage sensitive components. Ideal for hydraulic, pneumatic, and automated lubrication systems, they are critical for maintaining precision in applications requiring consistent, contamination-free lubricant delivery.
These fittings integrate two core technologies:
Push-to-Connect Design: Tool-free installation by inserting tubing into the fitting until it locks securely.
Check Valve Mechanism: A spring-loaded ball or poppet inside the fitting opens under system pressure to allow forward flow and closes to block reverse flow.
This dual functionality ensures reliable performance in progressive distributors, which meter lubricant to multiple points sequentially. The check valve prevents lubricant from flowing backward, maintaining system pressure and distribution accuracy.
Prevent Backflow: Safeguard against pressure loss and lubrication cycle disruptions.
Ensure System Integrity: Protect pumps and valves from damage caused by reverse fluid movement.
Fast Installation: Reduce downtime with tool-free assembly—no threading or clamps required.
Leak Resistance: Integrated O-rings and collets maintain seals under high vibration and pressure (up to 150–250 PSI).
Material Versatility: Available in brass, stainless steel, or thermoplastics for compatibility with oils, greases, and aggressive fluids.
Progressive distributors are widely used in centralized lubrication systems to deliver precise amounts of lubricant to multiple points. Check valve push-in fittings enhance their performance in:
Automotive Manufacturing: Ensuring consistent lubrication for robotic arms, assembly lines, and CNC machines.
Heavy Machinery: Protecting excavators, mining rigs, and agricultural equipment from dry-running bearings.
Food & Beverage: Hygienic designs for NSF-certified systems requiring contamination-free lubrication.
Packaging Machinery: Preventing grease backflow in high-speed bottling or sealing equipment.
Feature | Check Valve Push-In Fittings | Standard Push-In Fittings |
---|---|---|
Backflow Prevention | Yes (built-in valve) | No |
Pressure Retention | High (maintains system pressure) | Dependent on external valves |
Ideal Use Case | Progressive systems, bidirectional risks | Simple unidirectional systems |
Cost | Slightly higher (added valve mechanism) | Lower |
Flow Direction: Confirm the valve is oriented correctly for your system’s flow requirements.
Cracking Pressure: Ensure the valve’s opening pressure (e.g., 3–5 PSI) aligns with your system’s minimum operating pressure.
Fluid Compatibility: Match materials (e.g., stainless steel for corrosive fluids) to your lubricant type.
Tubing Size: Verify compatibility with your distributor’s tubing dimensions (e.g., 1/8” or 6mm).
Temperature Range: Select fittings rated for operational extremes (-20°C to 80 °C).
Clean Tubing Ends: Debris-free cuts prevent valve clogging or seal damage.
Test Flow Direction: Confirm the check valve opens in the intended flow direction.
Avoid Over-Pressurization: Stay within the fitting’s PSI rating to prevent valve failure.
Regular Inspections: Check for wear on O-rings or valve components during system maintenance.
Retrofit Gradually: Replace standard fittings in critical zones first to minimize downtime.
Q: Can these fittings handle viscous lubricants like grease?
A: Yes, but select models with larger flow paths and higher cracking pressures to avoid clogging.
Q: Are they reusable?
A: Absolutely—disconnect by pressing the release collar and reuse after inspection.
Q: Do check valves affect flow rates?
A: Minimally, but ensure the valve’s design (e.g., ball vs. poppet) suits your viscosity requirements.
Q: How do I troubleshoot a stuck valve?
A: Flush the system to remove debris or replace the fitting if the spring or seal is damaged.
Part No. | Tube | Thread | Item No. |
RVP04M10 | 4 | M10X1 | AHPV04-M10x1 |
RVP06M10 | 6 | M10X1 | AHPV06-M10x1 |
RVP08M10 | 8 | M10X1 | AHPV08-M10x1 |
RVP10M10 | 10 | M10X1 | AHPV10-M10x1 |
RVP1/8M10 | 1/8 | M10X1 | AHPV1/8-M10x1 |
RVP5/32M10 | 5/32 | M10X1 | AHPV5/32-M10x1 |
RVP1/4M10 | 1/4 | M10X1 | AHPV1/4-M10x1 |
RVP3/8M10 | 3/8 | M10X1 | AHPV3/8-M10x1 |